<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" clearable
                    v-model="queryInfo.query" @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" 
                       @click="getUserList"></el-button>
          </el-input>
        </el-col>
         <el-col :span="4">
           <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
         </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
         <el-table-column type="index"></el-table-column>
         <el-table-column label="姓名" prop="username"></el-table-column>
         <el-table-column label="邮箱" prop="email"></el-table-column>
         <el-table-column label="电话" prop="mobile"></el-table-column>
         <el-table-column label="角色" prop="role_name"></el-table-column>
         <el-table-column label="状态">
           <template slot-scope="scope">
             <el-switch @change="userStateChange(scope.row)" 
                        v-model="scope.row.mg_state"></el-switch>
           </template>
         </el-table-column>
         <el-table-column label="操作" width="200">
           <template slot-scope="scope">
             <!-- 修改按钮 -->
             <el-button type="primary" icon="el-icon-edit" 
                        size="mini" @click="showEditDialog(scope.row.id)"></el-button>
             <!-- 删除按钮 -->
             <el-button type="danger" icon="el-icon-delete" 
                        size="mini" @click="removeUserById(scope.row.id)"></el-button>
             <!-- 分配角色按钮 -->
             <el-tooltip effect="dark" :enterable="false"
                         content="分配角色" placement="top">
               <el-button type="warning" icon="el-icon-setting" 
                          size="mini" @click="setRole(scope.row)"></el-button>
             </el-tooltip>
           </template>
         </el-table-column>
      </el-table>
     <!--  分页区域 -->
     <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" 
               width="50%" @close="addDialoglClosed">
      <!-- 对话框的内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" 
               ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" 
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible"
      width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" 
                ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" 
                   @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色" width="50%" @close="setRoleDialogClosed"
      :visible.sync="setRoleDialogVisible">
       <div>
         <p>当前的用户：{{userInfo.username}}</p>
         <p>当前的角色：{{userInfo.role_name}}</p>
         <p>
           分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option v-for="item in rolesList"
                :key="item.id" :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
         </p>
       </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data() {
    //验证邮箱的自定义校验规则
    let checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if(regEmail.test(value)){
        //合法邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱!'))
    }
    //验证手机号的自定义校验规则
    let checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/    
      if(regMobile.test(value)){
        //合法手机号
        return cb()
      }
      cb(new Error('请输入合法的手机号码!'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        //当前页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', triggle: 'blur'},
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', triggle: 'blur'}
        ],
        password: [
          { required: true, message: '请输入密码', triggle: 'blur'},
          { min: 6, max: 15, message: '密码的长度在6~15个字符之间', triggle: 'blur'}
        ],
        email: [
          //校验是否输入
          { required: true, message: '请输入邮箱', triggle: 'blur'},
          //校验是否合法
          { validator: checkEmail, triggle: 'blur' }
        ],
        mobile: [
          //校验是否输入
          { required: true, message: '请输入手机号码', triggle: 'blur'},
          //校验是否合法
          { validator: checkMobile, triggle: 'blur' }
        ]
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象保存
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          //校验是否输入
          { required: true, message: '请输入邮箱', triggle: 'blur'},
          //校验是否合法
          { validator: checkEmail, triggle: 'blur' }
        ],
        mobile: [
          //校验是否输入
          { required: true, message: '请输入手机号码', triggle: 'blur'},
          //校验是否合法
          { validator: checkMobile, triggle: 'blur' }
        ]
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: [],
      //已选中的角色id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    //获取用户列表
    async getUserList() {
      const{data: res} = await this.$http.get('users', {
        params: this.queryInfo
      })
      if(res.meta.status !== 200){
       return this.$message.error('获取用户列表失败!')
      }
      this.userList = res.data.users
      this.total = res.data.total
      //console.log(res); 
    },
    //监听pagesize改变的事件
     handleSizeChange(newSize) {
        //console.log(newSize);
        this.queryInfo.pagesize = newSize
        //将得到的最新的页码发送出去
        this.getUserList()
    },
    //监听页码值改变的事件
    handleCurrentChange(newPage) {
        //console.log(newPage);
        this.queryInfo.pagenum = newPage
        this.getUserList()
    },
    //监听switch开关状态的改变
    async userStateChange(userinfo) {
      console.log(userinfo);
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
       if(res.meta.status !== 200){
         userinfo.mg_state = !userinfo.mg_state
         return this.$message.error('更新用户状态失败!')
       }
        this.$message.success('更新用户状态成功!')
    },
    //监听添加用户对话框的关闭事件
    addDialoglClosed() {
      //调用表单的resetFields事件进行重置
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮添加新用户
    addUser() {
      //预校验
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return
        //预校验通过可以发起添加用户的网络请求
        const {data: res} = await this.$http.post('users', this.addForm)
        if(res.meta.status !== 201){
          this.$message.error('添加用户失败!')
        }
          this.$message.success('添加用户成功!')
          //隐藏添加用户的对话框
          this.addDialogVisible = false
          //重新获取用户列表数据
          this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      //console.log(id);
      const {data: res} = await this.$http.get('users/' + id)
      if(res.meta.status !== 200){
        return this.$message.error('查询用户信息失败!')
      }
      this.editForm = res.data
      
      this.editDialogVisible = true
    },
    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      //预验证
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) return
        //预验证通过，可以发起修改用户信息的数据请求
        const {data: res} = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email, 
          mobile: this.editForm.mobile
        })
        if(res.meta.status !== 200){
          return this.$message.error('更新用户信息失败!')
        }
        //关闭对话框
        this.editDialogVisible = false
        //刷新数据列表
        this.getUserList()
        //提示修改成功
        this.$message.success('更新用户信息成功!')
      })
    },
    //根据id删除对应的用户信息
    async removeUserById(id) {
      //弹框提示用户是否确认删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户信息, 是否继续?', '删除用户', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
      }).catch(err => err)//用catch捕获错误信息

      //如果用户确认删除，则返回字符串confirm
      //如果用户取消删除，则返回字符串cancle
      //console.log(confirmResult);

      if(confirmResult !== 'confirm'){
        return this.$message.info('已取消删除')
      }
      const{data: res} = await this.$http.delete('users/' + id)
      if(res.meta.status !== 200){
        return this.$message.error('删除用户信息失败!')
      }
      this.$message.success('删除用户信息成功!')
      this.getUserList()
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      //将拿到的用户信息保存到data中
      this.userInfo = userInfo

      //在展示对话框之前获取所有角色的列表
      const {data: res} = await this.$http.get('roles')
      if(res.meta.status !== 200){
        return this.$message.error('获取角色列表失败!')
      }
      //将拿到的角色列表传给rolesList
      this.rolesList = res.data
      //展示对话框
      this.setRoleDialogVisible = true
    },
    //点击按钮分配角色
    async saveRoleInfo() {
      //判断有没有选择一个新的角色
      if(!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色!')
      }
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if(res.meta.status !== 200){
        this.$message.error('更新角色失败!')
      }
        this.$message.success('更新角色成功!')
        //刷新当前用户列表
        this.getUserList()
        //隐藏对话框
        this.setRoleDialogVisible = false
    },
    //监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      //分配完角色后再次打开回归初始状态
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>